Support Nexus 7 does not see my phone's tethered wifi

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http://androidforums.com – I have Wifi Tether for Root on my phone and my laptop sees (and is currently using) the phone's connection. However, my Nexus 7 does not. I've tried other tether apps as well, same problem. What could possibly be the issue? The lack of 3G is a real sore point for me with this device... (General)